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Flura [38]
2 years ago
6

A dragonfly the fastest insect can fly a distance of 50 feet

Mathematics
1 answer:
LuckyWell [14K]2 years ago
6 0

Answer:

if i remember correctly...dragonflies can fly more than just a distance of 50 feet because they are super duper fast

Hope this helped!!

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Rex puts $5,000 in a savings account with a simple
Mashcka [7]

Answer:

Rex earns $250 in interest after 2 years.

Step-by-step explanation:

5 0
3 years ago
How many complex zeros does the polynomial function have?<br> f(x)=−3x^6−2x^4+5x+6
REY [17]

one way would be to factor

I can't factor it so we will have to use Descartes' Rule of Signs which is helpful for finding how many real roots you have


it goes like this:

for a polynomial with real coefients, consider f(x)=-3x^6-2x^4+5x+6.

after arranging the terms in decending order in terms of degree, count how many times the signs of the coeffients change direction and minus 2 from that number until you get to 1 or 0. that will be the number of even roots the function can have

We have (-, -, +, +). the signs changed 1 times, so it has 1 real positive root


to get the negative roots, we evaluate f(-x) and see how many times the root changes

f(-x)=-3x^6-2x^4-5x+6

signs are (-, -, -, +). there was 1 change in sign

so the function has 1 real negative root



a total of 2 real roots


a function of degree n can have at most, n roots


our function is degree 6 so it has 6 roots

if 2 are real, then the others must be complex

6-2=4 so there are 4 complex roots


you can also show that there are only 2 real roots by using a graphing utility to see that there are only 2 real roots

7 0
3 years ago
In a recent survey, 15 out of 45 people said they prefer virtual school. Based on this sample, how many people in a population o
Mrrafil [7]

Answer:I want to go to school

Step-by-step explanation:because it is way eaiser

3 0
3 years ago
The coordinates of a point on a coordinate grid are (−3, 7). The point is reflected across the x-axis to obtain a new point. The
shepuryov [24]
The reflected points would be (-3,-7) 

The x coordinate would stay the same but the y-coordinate would be the opposite 
8 0
3 years ago
Help a sis out ??
REY [17]

Answer:

B

Step-by-step explanation:

let base be b then height h = 2b + 4

The area (A) of a triangle is calculated as

A = \frac{1}{2} bh ( b is the base and h the height ) , then

A = \frac{1}{2} b(2b + 4) ← distribute parenthesis

A = b² + 2b

When b = 16 , then

A = 16² + 2(16) = 256 + 32 = 288 in²

7 0
2 years ago
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